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In G.P \( 3 r d \) term is 24 and 6 th term is 192
then find 10 th term
| 2 |
Maths
|
A projectile is thrown in the upward direction making an angle of 60 with the horizontal direction with a velocity
of 47 Then the time after which its
inclination with the horizontal is 45
| 3 |
Physics
|
Which of the element is most poisonous to human?
A. \( O \)
в. \( S \)
c. \( S e \)
D. None of above
| 1 |
Chemistry
|
When a coil rotated in magnetic field
induced current in it :
A. continuously changes
B. remains same
c. becomes zero
D. becomes maximum
| 3 |
Physics
|
In the circuit shown in the fig the heat
produced in resistance \( R_{1} \) can be
measured by
A. connecting both voltmeter and an ammeter in parallel to \( R_{1} \)
B. connecting ammeter in series with \( R_{1} \) and voltmeter in parallel to both \( R_{1} \) and \( R_{2} \)
C. connecting ammeter in parallel to \( R_{1} \) and voltmeter in
series with \( R_{1} \)
D. connecting voltmeter in parallel to \( R_{1} \) and ammeter in
series with \( R_{1} \)
| 3 |
Physics
|
The modal class of the following frequency distribution is
class \( \begin{array}{cc}0- & 10- \\ 10 & 20\end{array} \) 30 40
Frequency
15
17
A . \( 20-30 \)
в. \( 10-20 \)
c. \( 30-40 \)
D. \( 40-50 \)
| 2 |
Maths
|
A toroidal coil has 3000 turns. The
inner and outer radii are \( 10 \mathrm{cm} \) and 14
cm respectively. If current flowing is \( 5 A \) then the magnetic field inside the toroid will be.
A \( .2 .5 \times 10^{-5} T \)
В . \( 2.5 \times 10^{-2} T \)
c. \( 0.25 T \)
D. \( 2.5 \times 10^{-4} T \)
| 3 |
Physics
|
Name the process usually employed for the purification of nickel?
| 1 |
Chemistry
|
SD region in prokaryotic mRNA is a part of
A. TATA BOX
B. RBS (Ribosome Binding Site)
c. ASD region
D. Promoter
| 0 |
Biology
|
What is the name for the horizontal
rows of the periodic table?
A. Groups
B. Periods
c. Families
D. sets
| 1 |
Chemistry
|
Given \( 300.0 \mathrm{mL} \) of a gas at \( 17^{0} \mathrm{C} \). What
is its volume at \( 10^{0} \) C?
| 1 |
Chemistry
|
Days are shorter in winter than in
summer because
A. The tilt of the earth's axis
B. The tilting of the sun
C. The climate results in shortening of days
D. None of the above
| 0 |
Biology
|
(a) What is enzyme catalysis? Write an
example.
(b) Which type of emulsion is milk? Explain.
(c) Explain Electrophoresis with labelled diagram.
| 1 |
Chemistry
|
Dimensions of 'ohm' are same as that
of:
(Given \( : h \) is Planck's constant and \( e \) is
charge)
\( A \cdot \frac{h}{e} \)
в. \( \frac{h^{2}}{e} \)
\( c \cdot \frac{h}{e^{2}} \)
D. \( \frac{h^{2}}{e^{2}} \)
| 3 |
Physics
|
If \( A \) is a square matrix, then \( A-A^{T} \) is
A. unit matrix
B. null matrix
\( c . A \)
D. a skew symmetric matrix
| 2 |
Maths
|
10 g mixture of \( N a H C O_{3} \) and
\( N a_{2} C O_{3} \) has 1.68 g \( N a H C O_{3} . \) It is
heated at 400 K. Weight of the residue will be :
A. \( 9.38 \mathrm{g} \)
B. 8.32 g
c. \( 10.0 \mathrm{g} \)
D. 1.68 g
| 1 |
Chemistry
|
The closest distance of the origin from a curve given as \( \boldsymbol{a} \overline{\boldsymbol{z}}+\overline{\boldsymbol{a}} \boldsymbol{z}+\boldsymbol{a} \overline{\boldsymbol{a}}=\mathbf{0}(\boldsymbol{a} \) is a
complex number
A . 1
в. \( \frac{|a|}{2} \)
c. \( \frac{\operatorname{Re}(a)}{|a|} \)
D. \( \frac{\operatorname{Im}(a)}{|a|} \)
| 2 |
Maths
|
On dividing the polynomial \( 3 x^{3}+ \) \( 4 x^{2}+5 x-13 \) by a polynomial \( g(x), \) the
quotient and the remainder were \( (3 x+ \)
10) and \( (16 x-43) \) respectively. Find
\( \boldsymbol{g}(\boldsymbol{x}) \)
| 2 |
Maths
|
Enzyme causing lysis of fibrin during fibrinolysis is
A. Fibrinogen
B. Plasmin
c. Thrombin
D. VIII Platelet factor
| 0 |
Biology
|
The correct sequence of increasing covalent character is represented by :
A \( \cdot \operatorname{Becl}_{2}< \) Nacl \( < \) Lic
B. NaCI<LiCI <BeCla
\( \mathrm{c} \cdot \mathrm{BeCl}_{2}<\mathrm{LiCl}<\mathrm{NaCl} \)
D. LiCI<NaCI<BeCI
| 1 |
Chemistry
|
Sum of \( (267+345)+21 \) and \( 267+ \)
\( (345+21) \) will be same
A. True
B. False
| 2 |
Maths
|
R.Q. of a germinating ground nut and castor seed is
A . 1
B. \( <1 \)
\( c \cdot>1 \)
D.
| 0 |
Biology
|
How many play cricket only?
| 2 |
Maths
|
\( (a+b)^{3}=? \)
\( \mathbf{A} \cdot a^{3}+3 a^{2} b+3 a b^{2}+b^{3} \)
B \( \cdot a^{3}+a^{2} b+a b^{2}+b^{3} \)
c. \( a^{3}-3 a^{2} b+3 a b^{2}-b^{3} \)
D \( \cdot a^{3}+3 a^{2} b-3 a b^{2}+b^{3} \)
| 2 |
Maths
|
3 faraday of electricity are passed through molten \( A l_{2} O_{3}, \) aqueous
solution of \( C u S O_{4} \) and molten NaCl
taken in three different electrolytic
cells. The amount of \( \mathrm{Al}, \mathrm{Cu}, \) and \( \mathrm{Na} \)
deposited at the cathodes will be in the ratio of
A. 1 mole : 2 mole : 3 mole
B. 3 mole:2 mole:1 mole
c. 1 mole : 1.5 mole : 3 mole
D. 1.5 mole : 2 mole : 3 mole
| 1 |
Chemistry
|
\( \boldsymbol{I}=\int_{0}^{3} \frac{\boldsymbol{x} \boldsymbol{d} \boldsymbol{x}}{1+\boldsymbol{x}^{2}} \)
| 2 |
Maths
|
The table shows a five-day forecast indicating high (H) and Low(L) temperatures in Fahrenheit. Organise the temperatures in a matrix where the
first and second rows represent the High and Low temperatures respectively and identify which day will be the
warmest?
\begin{tabular}{|c|c|c|c|c|}
\hline Mon & Tue & wed & Thu & Fri \\
\hline\( \sum_{i}^{m} \) & \( \sum_{i}^{m} \) & \( \sum_{i}^{m} \) & \( \sum_{i}^{m} \) & \( \sum_{j}^{m} \) \\
\hline \( \mathrm{H} 88 \) & \( \mathrm{H} 90 \) & \( \mathrm{H} 86 \) & \( \mathrm{H} 84 \) & \( \mathrm{H} 85 \) \\
\hline \( \mathrm{L} 54 \) & \( \mathrm{L} 56 \) & \( \mathrm{L} 53 \) & \( \mathrm{L} 52 \) & \( \mathrm{L} 52 \) \\
\hline
\end{tabular}
| 2 |
Maths
|
If a continuous function \( \boldsymbol{f} \) satisfies \( \int_{0}^{x^{2}} f(t) d t=x^{2}(1+x) \operatorname{then} f(4) \) is
equal to
\( A \cdot 7 \)
B. 4
c. 5
\( D \)
| 2 |
Maths
|
The work done in an open vessel at 300
K, when \( 112 g \) iron reacts with dilute
\( H C l \) to give \( F e C l_{2}, \) is nearly:
A. 1.1 kcal
B. 0.6 kcal
c. 0.3 kcal
D. 0.2 kcal
| 1 |
Chemistry
|
Which one of the following is less polluting fuel?
A. Natural gas
B. coal
c. Kerosene
D. Petrol
| 1 |
Chemistry
|
If the range of \( 5 \cos \theta+3 \cos \left(\theta+\frac{\pi}{3}\right)+ \)
\( \mathbf{3} \) is \( [\boldsymbol{a}, \boldsymbol{b}], \forall \boldsymbol{\theta} \in \mathbf{R} \) then \( \boldsymbol{a}+\boldsymbol{b} \) is equal to
\( \mathbf{A} \cdot \mathbf{6} \)
B. 2
c. 8
D. 4
| 2 |
Maths
|
The value of \( \int x^{3} \log x d x \) is
A \( \cdot \frac{1}{16}\left(4 x^{4} \log x-x^{4}+c\right) \)
B \( \cdot \frac{1}{8}\left(x^{4} \log x-4 x^{4}+c\right) \)
c. \( \frac{1}{16}\left(4 x^{4} \log x+x^{4}+c\right) \)
\( \frac{x^{4} \log x}{4}+c \)
| 2 |
Maths
|
The dot products of a vector with the vectors \( (\hat{i}+\hat{j}-3 \hat{k}),(\hat{i}+3 \hat{j}-2 \hat{k}) \) and
\( (2 \hat{i}+\hat{j}+4 \hat{k}) \) are 0,5,8 respectively
Find the vector.
| 2 |
Maths
|
How many of the following compound on
thermal decomposition gives \( N_{2} \) gas?
\( \left(N H_{4}\right)_{2} C r_{2} O_{7}, N H_{4} N O_{3}, N H_{4} I O_{3} \)
\( N H_{4} N O_{2}, B a\left(N_{3}\right)_{2}, B a\left(N O_{3}\right)_{2} \)
\( \left(N H_{4}\right)_{2} S O_{4},\left(N H_{4}\right)_{2} C O_{3} \)
\( A \cdot 2 \)
B. 3
\( c \cdot 4 \)
D. 5
| 1 |
Chemistry
|
A neutron in a nuclear reactor collides
head on elastically with the nucleus of a carbon atom initially at rest. The fraction of kinetic energy transferred from the neutron to the carbon atom is
A \( \cdot \frac{11}{12} \)
B. \( \frac{2}{11} \)
c. \( \frac{48}{121} \)
D. \( \frac{48}{169} \)
| 3 |
Physics
|
If \( (x+1), 3 x \) and \( (4 x+2) \) are first
three terms of an AP then its 5th term
is
A . 14
B. 19
c. 24
D. 28
| 2 |
Maths
|
19 boys turn out for baseball. Of these
11 are wearing baseball shirts and 14 are wearing baseball pants. There are no boys without one or the other. The
number of boys wearing full uniform is
\( \mathbf{A} \cdot \mathbf{8} \)
B. 6
c. 5
D. 3
| 2 |
Maths
|
Damaged parts and organs can be repaired by
A. Reparative regeneration
B. Restorative regeneration
c. Physiological regeneration
D. Heteromorphic regeneration
| 0 |
Biology
|
Evaluate \( (\sqrt{\mathbf{3}}-\sqrt{\mathbf{2}})^{\mathbf{6}}+(\sqrt{\mathbf{3}}+\sqrt{\mathbf{2}})^{\mathbf{6}} \)
A. 678
в. 950
\( c .970 \)
D. 670
| 2 |
Maths
|
In a right angled triangle if an angle
measures then \( 35^{0} \) the measure of
other angle is
A \( .65^{\circ} \)
B. 55
c. \( 45^{\circ} \)
D. 30
| 2 |
Maths
|
The electric field at a distance \( 2 \mathrm{cm} \) from the centre of a hollow spherical conducting shell of radius \( 4 \mathrm{cm} \) having a charge of \( 2 \times 10^{-3} \mathrm{C} \) on its surface is :
This question has multiple correct options
A . \( 1.1 \times 10^{10} V / m \)
B . \( 4.5 \times 10^{-10} V / m \)
C \( .4 .5 \times 10^{10} V / m \)
D. zero
| 3 |
Physics
|
Find the angle which is supplementary of itself
| 2 |
Maths
|
Which of the following is not included under optical aids?
A. Contact lenses
B. Tinted lenses
c. Magnifiers
D. None of these
| 3 |
Physics
|
Calculate the cost of using four 500 W air-conditioners for eight hours each
day for a 30 day month. The unit cost of electrical energy is Rs. 1.50 per \( \mathrm{kWh} \)
| 3 |
Physics
|
Find the standard deviation of 40,42
and \( 48 . \) If each value is multiplied by 3 find the standard deviation of the new
data
| 2 |
Maths
|
If \( |\vec{A}+\vec{B}|=|\vec{A}|=|\vec{B}|, \) then angle
between \( \vec{A} \) and \( \vec{B} \) is
A \( \cdot 0^{\circ} \)
B. \( 60^{\circ} \)
\( c .90^{\circ} \)
D. \( 120^{\circ} \)
| 2 |
Maths
|
The floor of a building consists of around 3000 tiles which are rhombus
shaped and each of its diagonals are \( 45 c m \) and \( 30 c m \) in length. Find the total
\( \operatorname{cost} \) of flooring if each tile costs rupees
20 per \( m^{2} \)
| 2 |
Maths
|
Prove that:
\[
\left|\begin{array}{ccc}
\boldsymbol{a}-\boldsymbol{b}-\boldsymbol{c} & \boldsymbol{2} \boldsymbol{a} & \boldsymbol{2} \boldsymbol{a} \\
\boldsymbol{2} \boldsymbol{b} & \boldsymbol{b}-\boldsymbol{c}-\boldsymbol{a} & \boldsymbol{2} \boldsymbol{b} \\
\boldsymbol{2} \boldsymbol{c} & \boldsymbol{2} \boldsymbol{c} & \boldsymbol{c}-\boldsymbol{a}-\boldsymbol{b}
\end{array}\right|=
\]
\( (a+b+c)^{3} \)
| 2 |
Maths
|
If \( \vec{a}=i+j-k, \vec{b}=1-j+k, \vec{c} \) is a
unit vector such that \( \vec{c} . \vec{a}=0,[\vec{c} \vec{a} \vec{b}]=0 \)
then a unit vectors perpendicular to both \( \vec{a} \) and \( \vec{c} \) is
A \( \cdot \frac{1}{\sqrt{6}}(2 i-j+k) \)
B. \( \frac{1}{\sqrt{2}}(j+k) \)
c. \( \frac{1}{\sqrt{2}}(i+j) \)
D. \( \frac{1}{\sqrt{2}}(i+k) \)
| 2 |
Maths
|
What is the ability of the eye lens to
adjust its focal length called?
| 3 |
Physics
|
The principal value of \( \tan ^{-1}\left(\cot \frac{43 \pi}{4}\right) \) is
A \( \cdot-\frac{3 \pi}{4} \)
B. \( \frac{3 \pi}{4} \)
\( c \cdot-\frac{\pi}{4} \)
\( D \cdot \frac{\pi}{4} \)
| 2 |
Maths
|
a) Write the mechanism of acid
catalysed dehydration of ethanol to ethene.
b) Between phenol and alcohol which is
more acidic? Why?
| 1 |
Chemistry
|
The half-life of a radioactive material is
693 years. Find its decay constant.
| 3 |
Physics
|
Sl unit of G in Newton's law of
Gravitation is :
A \( \cdot N^{2} m^{2} / k g \)
в. \( N m^{2} / k g \)
c. \( N m / k g \)
D. \( N m^{2} / k g^{2} \)
| 3 |
Physics
|
Which of the following rejector circuit (symbols have their usual meaning)?
\( A \)
B.
\( c \)
D.
| 3 |
Physics
|
An electromagnetic wave has energy in
the form of
A. variable electric field
B. variable magnetic field
c. both A and B
D. none of the above
| 3 |
Physics
|
\( \int_{1}^{2} x^{2} \log x d x_{=} \)
A. \( \frac{8}{3} \log 2-\frac{7}{9} \)
в. \( \frac{8}{3} \log 2+\frac{7}{9} \)
c. \( \frac{8}{3} \log \frac{1}{3}-\frac{7}{9} \)
D. \( \frac{8}{3} \log \frac{1}{3}+\frac{7}{9} \)
| 2 |
Maths
|
The perimeter of one face of a cube is 24
\( \mathrm{cm} . \) Find the total area of the 6 faces in
\( \mathrm{cm}^{2} \)
| 2 |
Maths
|
A crane pulls up a car of mass \( 500 \mathrm{kg} \) to a vertical height of \( 4 m . \) So, work done by
the crane is:
A. \( 19.6 J \)
в. \( 19.6 k J \)
c. \( 19600 k J \)
D. \( 4900 J \)
| 3 |
Physics
|
Which of the following statement is true for laws of reflection?
A. The incident ray, reflected ray and the normal lie in the same plane.
B. Angle of incidence is equal to the angle of reflection
c. Both A and B
D. None
| 3 |
Physics
|
Differentiate with respect to \( x \) :
\( e^{-3 x} \log (1+x) \)
| 2 |
Maths
|
Which of the following is used for purification of aldehydes from impurities?
\( \mathbf{A} \cdot H C N \)
в. \( \operatorname{NaHSO}_{3} \)
c. \( C H_{3} M g B r \)
D. \( N a_{2} S O_{4} \)
| 1 |
Chemistry
|
A mass m starting from A reaches B of
frictionless track. On reaching B, it pushes the track with a force equal to \( x \)
times its weight, then the applicable relation is :
A \( n=\frac{(5-x)}{2} \)
в. \( h=\frac{x}{2} R \)
\( c \cdot h=R \)
' \( h=\left(\frac{x+1}{2}\right) R \)
| 3 |
Physics
|
Energy is released during the formation
of:
A. hydride ion
B. oxide ion
c. ferrous ion
D. ferric ion
| 1 |
Chemistry
|
Draw a labelled diagram of a step-up transformer. Obtain the ratio of
secondary to primary voltage in terms of number of terns and current in the
two coil.
| 3 |
Physics
|
What is the angular velocity of rotation of this rigid body?
A \( \cdot \frac{V_{0}}{5 d} \)
B. \( \frac{V_{0}}{d} \)
c. \( \frac{V_{0}}{3 d} \)
D.
| 3 |
Physics
|
Which type of reaction in the reduction
of carbonyl compound with \( L A H \) and
\( N a B H_{4} \) occurs, and which nucleophile takes part in the reaction?
A . Nucleophilic addition and \( A l H_{4}^{\ominus} \) or \( B H_{4}^{\text {d }} \)
B. Nucleophilic addition and \( H^{\ominus} \)
C. Nucleophilic substitution and \( A l H_{4}^{\ominus} \) or \( B H_{4}^{\text {d }} \)
D. Nucleophilic substitution and \( H^{\ominus} \)
| 1 |
Chemistry
|
Use or storage of acetylene in the form of liquid is prohibited by law.
A. True
B. False
| 1 |
Chemistry
|
Which of the following are green lungs?
A. Green coloured lungs
B. Lungs with green alga
c. Lungs in Green coloured animals
D. Forests
| 0 |
Biology
|
Statement \( (A): \) The reactance offered by an inductance in A.C. circuit decreases with the increase of \( A C \)
frequency. Statement \( (\mathrm{B}): \) The reactance offered
by a capacitor in AC circuit increases with the increase of AC frequency.
A. A is true but B is false
B. Both A and B are true
c. A is false but B is true
D. Both A and B are false
| 3 |
Physics
|
It is known that \( 60 \% \) mice inoculated
with a serum are protected from a
certain disease. If 5 mice are
inoculated, find the probability that none contact the disease.
| 2 |
Maths
|
The electron pairs involved in hybridisation and not involved in bonding are called
| 1 |
Chemistry
|
If \( \int \frac{2 \sin x+3 \cos x}{3 \sin x+4 \cos x} d x=A \log \)
\( |3 \sin x+4 \cos x|+B x+c, \) then \( A= \)
\( \ldots \ldots \ldots, B=\ldots \ldots \ldots . . \)
A. \( -\frac{1}{25}, \frac{18}{25} \)
8. \( -\frac{1}{5},-\frac{1}{5} \)
c. \( \frac{1}{25}, \frac{18}{25} \)
D. \( \frac{1}{25}, \frac{3}{25} \)
| 2 |
Maths
|
Consider the following in respect of the function \( \boldsymbol{f}(\boldsymbol{x})=\left\{\begin{array}{ll}2+\boldsymbol{x}, & \boldsymbol{x} \geq 0 \\ 2-\boldsymbol{x}, & \boldsymbol{x}<0\end{array}\right. \)
1. \( \lim _{x \rightarrow 1} f(x) \) does not exist.
2. \( f(x) \) is differentiable \( a t x=0 \)
3. \( f(x) \) is continuous at \( x=0 \)
Which of the above statements is/are
correct?
A. 1 only
B. 3 only
c. 2 and 3 only
D. 1 and 3 only
| 2 |
Maths
|
If \( f(x)=x+7 \) and \( g(x)=x-7, x \in R \)
find \( (f o g)(7) . \) function \( f: R \rightarrow R \)
defined by \( f(x)=\frac{3 x+5}{2} \) is an invertible
function, find \( \boldsymbol{f}^{-1} \)
| 2 |
Maths
|
The truth-table given below is for which gate?
\( \begin{array}{lll}A & B & C \\ 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array} \)
A. xor
B. OR
c. AND
D. NAND
| 3 |
Physics
|
Figure \( (a) \) below shows a Wheatstone
bridge in which \( P, Q, R, S \) are fixed
resistances, \( G \) is a galvanometer and \( B \)
is a battery. For this particular case the galvanometer shows zero deflection.
Now, only the positions of \( B \) and \( G \) are
interchanged, as shown in figure ( \( b \) ).
The new deflection of the galvanometer.
A. Is to the left
B. Is to the right
\( c . \) Is zero
D. Depends on the values of \( P, Q, R, S \).
| 3 |
Physics
|
The IUPAC name of \( \boldsymbol{X} \boldsymbol{e}\left[\boldsymbol{P} \boldsymbol{t} \boldsymbol{F}_{\boldsymbol{6}}\right] \) is:
A. Hexafluoridoplatinate (VI) xenon
B. Xenon xenon hexafluoroplatinate (V)
c. xenon hexafluoridoplatinate (VI)
D. xenonium hexafluoridoplatinum ( V )
| 1 |
Chemistry
|
There are 5 cards in a box with numbers
1 to5 written on them. If 2 cards are
picked out from the box, write all the possible outcomes and find the probpossible ability of getting both even numbers.
| 2 |
Maths
|
Here is another look at the reaction of
crystal violet with sodium hydroxide, a
first-order reaction \( (\ln A \mathbf{v} \text { time }) \)
What is the significance of the slope?
A. The slope represents the change in concentration over time
B. The slope represents the inverse of change in concentration over time
c. The slope represents the negative value of the rate constant
D. The slope represents the negative rate of product concentration over time
| 1 |
Chemistry
|
Which one of the following is a disaccharide?
A. Starch
B. Lactose
c. Cellulose
D. Fructose
| 1 |
Chemistry
|
ENERGY OF AN ORBITING SATELLITE
A comet orbits the sun in a highly elliptical orbit. Which of the following quantities remains constant throughout its orbit?
(i) Linear speed
(ii) Angular speed (iii) Angular momentum (iv) Kinetic energy
(v) Potential energy (vi)Total energy
\( A \cdot(i),(\text { ii) },( \text { iii) } \)
B. (iii), (iv), (v)
c. (iii) and (vi)
D. (ii), (iii) and (vi)
| 3 |
Physics
|
State whether True or False:
Facatorization of \( 9 x^{2}-\frac{1}{16} \) is \( (3 x- \) \( \left.\frac{1}{4}\right)\left(3 x+\frac{1}{4}\right) \)
A. True
B. False
| 2 |
Maths
|
Which of the following is most common pathogen pollutant?
A . Coliform
B. E. coli bacteria
c. Psedumonas
D. Both A and B
| 0 |
Biology
|
Q Type your question
\[
\underset{\mathbf{M e} \atop \mathbf{P r o p e n}}^{\mathbf{S}}+\mathbf{P} \mathrm{d} \mathrm{Cl}_{2}+\mathbf{H}_{2} \mathbf{O} \frac{\mathbf{C u C l}_{2}}{\mathbf{O}_{2}} \underbrace{\mathbf{O}}_{\mathbf{M e}} \|_{\mathbf{M e}}+\mathbf{P} \mathbf{d}+\mathbf{3 H C l}
\]
(The reaction proceeds via the addition of \( \mathbf{H}^{\oplus} \) and \( \mathbf{O} \mathbf{H} \) by Markovnikov's rule followed by oxidation.
(or)
(iii) \( \mathrm{BH}_{3}+\mathrm{THF}+\mathrm{CH}_{3} \mathrm{COOH} \)
OH
(Wacker process)
This question has multiple correct options
\( \mathbf{A} \cdot H_{2} / P t \quad M M P P \quad \) Coldalk. \( K M n O_{4} \quad O_{2}+ \)
\[
P d C l_{2}+C u C l_{2}+H_{2} O
\]
\( \mathbf{B} \cdot H_{2} / P d+B a S O_{4}+ \)
quinoline\( \quad H C O_{3} H \quad \)Hotalk. \( K M n O_{4} \)
\( H \)
\( H g^{2+} \)
\( \mathbf{c} \cdot \sin _{2} B H+ \)
\( C H_{3} C O O H \quad P h C O_{3} H \quad O s O_{4} / N a H S O_{3} \)
\[
P d C l_{2}+C u C l_{2}+H_{O}
\]
\( \mathbf{D} \cdot B H_{3}+T H F+ \)
\[
\begin{array}{llll}
C H_{3} C O O H & M C P B A & O s O_{4} / H_{2} O_{2} & i
\end{array}
\]
| 1 |
Chemistry
|
Assign structures to \( A, B, C \) and \( D \) in
the following:
\( \mathbf{A} \cdot C H_{2} C H_{2} C H_{2} C H_{2}+a l c \cdot K O H \rightarrow A \)
\( B r \)
B \cdot \( \left(C H_{3}\right)_{3} C B r+C H_{3} C O O^{-} \rightarrow B \)
c. \( \left(C H_{3}\right)_{2} C H \underset{O_{H}}{C H} C H_{3}+H_{2} S O_{4} \triangleq C \)
\( D \)
| 1 |
Chemistry
|
How much positive and negative charge
is there in a cup of water?
| 3 |
Physics
|
\( \frac{d}{d} \)
| 1 |
Chemistry
|
Macrocystis is a
A. Red algae
B. Fungi
C . Bryophyta
D. Brown algae
| 0 |
Biology
|
Choose the correct statement
A. Any charged particle in rest is accompanied by matter waves.
B. Any uncharged particle in rest is accompanied by matter waves.
C. The matter waves are waves of zero amplitude.
D. The matter waves are waves of probability amplitude.
| 3 |
Physics
|
Structure present in a cell which is responsible for determination of the sex of a baby is
A . Cytoplasm
B. Cell membrane
c. Nucleus
D. chromosome
| 0 |
Biology
|
The ratio of the value of any colligative property for \( N a C l \) solution of that of an
equimolal solution of sugar is nearly
\( \mathbf{2}: \mathbf{1} \)
A. True
B. False
| 1 |
Chemistry
|
The lightening conductor is connected to interface with ground or "earth" through
\( A \cdot \) a cathode
B. an anode
c. an electrode
D. a semiconductor
| 3 |
Physics
|
Six X's have to be placed in the square
of given figure such that each row
contains at least one X. Then number of
ways doing so are
A . 28
B. 26
\( c .6 \)
D. \( 8 ! .6 \)
| 2 |
Maths
|
The incorrect statement in respect of chromyl chloride test is
A. Formation of Red vapour
B. Liberation of chlorine
c. Formation of chromyl chloride
D. All statements are wrong
| 1 |
Chemistry
|
A 0.02 M solution of pyridinium
hydrochloride has \( p H=3.44 . \) Calculate
the ionization constant of pyridine.
| 1 |
Chemistry
|
A current of 5 A is passing through a metallic wire of cross-sectional area
\( 4 \times 10^{-6} m^{2} . \) If the density of charge
carriers of the wire is \( 5 \times 10^{26} m^{-3}, \) then
the drift velocity of the electrons will be
A \( \cdot 1 \times 10^{2} m / s \)
B . \( 1.56 \times 10^{-2} \mathrm{m} / \mathrm{s} \)
c. \( 1.56 \times 10^{-3} \mathrm{m} / \mathrm{s} \)
D. \( 1 \times 10^{-2} \mathrm{m} / \mathrm{s} \)
| 3 |
Physics
|
Crystallisation is an example of chemical change.
A. True
B. False
| 1 |
Chemistry
|
Displacement current goes through the gap between the plates of a capaitor when the charge of the capacitor:
(i) does not change
(ii) change with time
(iii) increases
(iv) decreases
\( A \cdot(i),(\text { iii }) \) and \( (\text { iv }) \)
B. (i), and (ii) and (iv)
c. ( ii ), (iii) and (iv)
D. (i), (ii) and (iii)
| 3 |
Physics
|
In which of the following reaction pair of
diastereomers will form?
4
B
D. All of these
| 1 |
Chemistry
|
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